122221222200000 has 2016 divisors, whose sum is σ = 551614975382016. Its totient is φ = 25132032000000.

The previous prime is 122221222199981. The next prime is 122221222200029. The reversal of 122221222200000 is 2222122221.

122221222200000 is a `hidden beast` number, since 1 + 22 + 221 + 222 + 200 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 13444195455 + ... + 13444204545.

It is an arithmetic number, because the mean of its divisors is an integer number (273618539376).

Almost surely, 2^{122221222200000} is an apocalyptic number.

122221222200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122221222200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275807487691008).

122221222200000 is an abundant number, since it is smaller than the sum of its proper divisors (429393753182016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122221222200000 is an equidigital number, since it uses as much as digits as its factorization.

122221222200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9216 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 122221222200000 its reverse (2222122221), we get a palindrome (122223444322221).

The spelling of 122221222200000 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred thousand".